package Lock;

import java.util.concurrent.locks.ReentrantLock;

/**
 * 测试Lock锁
 * @author luyao_start
 * @create 2021-08-19-23:01
 */
public class TestLock {

    public static void main(String[] args) {
        TestLock2 testLock2 = new TestLock2();
        new Thread(testLock2).start();
        new Thread(testLock2).start();
        new Thread(testLock2).start();
    }

}

class TestLock2 implements Runnable{
    int ticketNums = 10;

    //定义lock锁
    private ReentrantLock lock = new ReentrantLock();

    @Override
    public void run() {

        try {


            while (true) {
                lock.lock();
                if (ticketNums > 0) {
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(ticketNums--);
                } else {
                    break;
                }
            }
        }finally {
            lock.unlock();
        }
    }
}
